diff --git a/external/color/color.cpp b/external/color/color.cpp
index 9c7fe5c..4f30061 100644
--- a/external/color/color.cpp
+++ b/external/color/color.cpp
@@ -13,7 +13,7 @@ Color::Color(std::string hex) {
     if (hex.length() == 6) {
         hex = "FF" + hex;
     }
-    p_color = std::stoul(hex, nullptr, 16);
+    p_color = (uint32_t)std::stoul(hex, nullptr, 16);
 }
 
 Color::Color(Colors color) {
@@ -180,7 +180,7 @@ Color::Color(Colors color) {
             case Colors::Medium_Orchid:
                 Color(0x93, 0x70, 0xDB);
             break;
-            case Colors::Medium_Sea_Green:
+            case Colors::Medium_Seagreen:
                 Color(0x42, 0x6F, 0x42);
             break;
             case Colors::Medium_Slate_Blue:
@@ -326,15 +326,15 @@ uint32_t Color::color() const {
 }
 
 uint8_t Color::red() const {
-    return (p_color >> 24) & 0xFF;
+    return (uint8_t)((p_color >> 24) & 0xFF);
 }
 
 uint8_t Color::green() const {
-    return (p_color >> 16) & 0xFF;
+    return (uint8_t)((p_color >> 16) & 0xFF);
 }
 
 uint8_t Color::blue() const {
-    return (p_color >> 8) & 0xFF;
+    return (uint8_t)((p_color >> 8) & 0xFF);
 }
 
 uint8_t Color::alpha() const {
diff --git a/external/color/color.hpp b/external/color/color.hpp
index cb33dcc..4c42433 100644
--- a/external/color/color.hpp
+++ b/external/color/color.hpp
@@ -60,7 +60,6 @@ class Color {
         Medium_Forest_Green,
         Medium_Goldenrod,
         Medium_Orchid,
-        Medium_Sea_Green,
         Medium_Seagreen,
         Medium_Slate_Blue,
         Medium_Spring_Green,
diff --git a/src/UI/UI_combobox.cpp b/src/UI/UI_combobox.cpp
index 803552f..f5c77f8 100644
--- a/src/UI/UI_combobox.cpp
+++ b/src/UI/UI_combobox.cpp
@@ -5,7 +5,7 @@ UI_combobox::UI_combobox()
 {
 }
 
-UI_combobox::UI_combobox(std::string id, std::string text, Color fg_color, Color bg_color, std::vector<std::string> options, int selected, UI_combobox_on_change on_change)
+UI_combobox::UI_combobox(std::string id, std::string text, Color fg_color, Color bg_color, std::vector<std::string> options, size_t selected, UI_combobox_on_change on_change)
     : UI_x_boxes(id, UI_COMBOBOX_TYPE, text, fg_color, bg_color, options), p_selected(selected), p_on_change(on_change)
 {
 }
diff --git a/src/UI/UI_combobox.hpp b/src/UI/UI_combobox.hpp
index 6009610..be2bd7a 100644
--- a/src/UI/UI_combobox.hpp
+++ b/src/UI/UI_combobox.hpp
@@ -4,13 +4,13 @@
 #include "UI_x_boxes.hpp"
 
 #define UI_COMBOBOX_TYPE std::string("UIcombobox")
-typedef void (*UI_combobox_on_change) (std::string id, int selected);
+typedef void (*UI_combobox_on_change) (std::string id, size_t selected);
 
 class UI_combobox : public UI_x_boxes
 {
     public:
         UI_combobox();
-        UI_combobox(std::string id, std::string text, Color fg_color, Color bg_color, std::vector<std::string> options, int selected, UI_combobox_on_change on_change = nullptr);
+        UI_combobox(std::string id, std::string text, Color fg_color, Color bg_color, std::vector<std::string> options, size_t selected, UI_combobox_on_change on_change = nullptr);
         UI_combobox(std::string id, std::string text, Color fg_color, Color bg_color, std::vector<std::string> options, UI_combobox_on_change on_change = nullptr);
         UI_combobox(const json& j);